On Mon, Jun 9, 2014 at 11:27 PM, Jens Axboe <ax...@fb.com> wrote: > On 2014-06-09 08:59, Christoph Hellwig wrote: >> >> On Mon, Jun 09, 2014 at 08:08:50AM -0600, Jens Axboe wrote: >>>> >>>> [ 487.704074] nvme 0000:00:07.0: Cancelling I/O 202 QID 1 >>>> [ 487.717881] nvme 0000:00:07.0: Aborting I/O 202 QID 1 >>>> [ 487.736093] end_request: I/O error, dev nvme0n1, sector 91532352 >>>> [ 487.747378] nvme 0000:00:07.0: completed id 0 twice on queue 0 >>>> >>>> >>>> when running fio randread(libaio, iodepth:64) with more than 3 jobs. >>>> >>>> And looks no such failure when jobs is 1 or 2. >>> >>> >>> It's a known issue, make sure you have this patch: >>> >>> >>> https://urldefense.proofpoint.com/v1/url?u=http://git.kernel.dk/?p%3Dlinux-block.git%3Ba%3Dcommit%3Bh%3Df6be4fb4bcb396fc3b1c134b7863351972de081f&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=3JMVyziIyZtZ5cv9eWNLwQ%3D%3D%0A&m=MKK7A%2B9AnXXwtMV9YPSFEprXId0z0WLtd2JQPxnaNVc%3D%0A&s=45425e5d17390ae912457035ff081b95a7084725706ffe91166a1bdb25d8bf3d >> >> >> So without this patch we can get duplicate completions? That could >> explain the issues that Robert sees with scsi-mq and hpsa..
Use-after-free may cause duplicate completions. BTW, is the scsi-mq patchset public now? Thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
